Annual report pursuant to Section 13 and 15(d)

Schedule III - Real Estate and Accumulated Depreciation (Parenthetical) (Detail)

v3.3.1.900
Schedule III - Real Estate and Accumulated Depreciation (Parenthetical) (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Real Estate Held for Sale [Member]  
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Real estate held for sale, net $ 1,053
Real Estate Held for Sale [Member] | Dayton, Ohio Office Building [Member]  
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Real estate held for sale, net $ 1,503
Building [Member]  
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Depreciable life Shorter of the useful life of the asset or 39 years.
Improvements [Member] | Minimum [Member]  
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Depreciable life 5 years
Improvements [Member] | Maximum [Member]  
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Depreciable life 20 years